Single +24 V Dc Power Source To Controller And Itbs; Table 2-3. Single +24 V Dc Power Source To Controller And Itbs; Figure 2-13. Single +24 V Dc Power Source To Controller And Itbs - ABB ControlIT 53MC5000 Instruction Manual

2.7.1 SINGLE +24 V DC POWER SOURCE TO CONTROLLER AND ITBS

The procedure to connect the controller TB2 screw lugs to a +24 V dc power source is provided in
Table 2-3. This procedure assumes the power supply, controller, and ITBs are negatively
grounded (negative ground system).

Table 2-3. Single +24 V dc Power Source to Controller and ITBs

Step
1 Connect the positive (+) 24 V input line, via a remote SPST switch, to TB2-4
( L1 ).
Connect the negative (-) 24 V input line to TB2-3 ( L2 ).
2
3 Connect TB2-1, Power Common ( PC ), to a bus bar that is connected to
earth ground.
Individual wires should connect each controller Power Common ( PC ) screw
lug to the common bus bar.
Connect the earth ground to TB2-5, Chassis Safety Ground ( G ).
4
PC L3 L2 L1 G
1

Figure 2-13. Single +24 V dc Power Source to Controller and ITBs

2-18
53MC5000 Process Control Station
Procedure
2 3 4 5
COMMON BUS BAR FOR
ALL CONTROLLERS
EARTH GROUND
TB2 (REAR OF
CONTROLLER)
+
SPST
-
See Figure
Figure 2-13
Figure 2-13
Figure 2-13
Figure 2-14
Figure 2-13
24 V dc
POWER
SUPPLY
AC